This item was purchased on Mercari about two years ago. I experienced no problems during the time I used it. It's a 16mm prime lens for E-mount (APS-C sensor), with an aperture of F2.8, making it ideal for wide-angle photography. It's a used item, so please be aware that there may be some minor dust particles that don't affect the photos. - Model Name: E16mm F2.8 (SEL16F28) - Mount Type: E-mount - Included Accessories: Front lens cap, rear lens cap Thank you for looking.